filter.js

function filter(injection, html){

	 var testing = injection.split('~').map(function(v) {
      var json = JSON.stringify(v).replace(/<\//g, '<\\/');
      return '<script>goodluck('+json+')</script>';
      }).join('');
  return html.replace(/INJECTION/, testing);
}

function goodluck(input){
	return console.log('goodluck with ' + input + ' <3.');;
}